Implement chassis set power restore policy command

Implement the IPMI set power restore policy command 0x06.
This command can be used to configure the power restore policy.
This configuration parameter is kept in nonvolatile storage.
The power restore policy determines how the system or chassis
behaves when AC power returns after an AC power loss

Tested:
Run the below command to check the current Power Restore Policy:
ipmitool -H <IP> -P 0penBmc -I lanplus chassis status

Run the below command to change it:
ipmitool -H <IP> -P 0penBmc -I lanplus chassis policy always-off

Change-Id: I224912890f9a9e8b4dc98f840cd6f223c9f7dfe5
Signed-off-by: Yong Li <yong.b.li@linux.intel.com>
3 files changed